<h3>描述</h3>
<p>设置labelWidth接口，表单条目label的宽度</p>
<h3>示例</h3>
<ti-formfield [title]="title" [labelWidth]="labelWidth">
  <ti-item *ngFor="let item of items" [label]="item.label" [required]="item.required" [index]="item.index">
    <input type="text" tiText [(ngModel)]="item.value" style="width: 230px" />
  </ti-item>
</ti-formfield>
<br /><br />
<ti-formfield [title]="title1" [labelWidth]="labelWidth">
  <ti-item *ngFor="let item of items1" [label]="item.label" [required]="item.required" [index]="item.index">
    <input type="text" tiText [(ngModel)]="item.value" style="width: 230px" />
  </ti-item>
</ti-formfield>
<br /><br />
<ti-formfield [title]="title2" [colsWidth]="colsWidth" [labelWidth]="labelWidth1">
  <ti-item *ngFor="let item of items1" [label]="item.label" [required]="item.required" [index]="item.index">
    <input type="text" tiText [(ngModel)]="item.value" style="width: 230px" />
  </ti-item>
  <ti-button-item>
    <button type="button" tiButton style="margin-right: 20px">确认</button
    ><!--
         --><button type="button" tiButton>取消</button>
  </ti-button-item>
</ti-formfield>
<br /><br />
<button type="button" (click)="changeLabelwidth()" tiButton>动态变更labelWidth</button>
